In any creative passion, there is a huge difference between the apprentice and the master. With enough raw talent and determination, through years of practice and persistence, that gap can be bridged.
With regards to this path from amateur to professional, there is one aspect of the talented that I find holds true across multiple disciplines. The impostor follows a set formula without deviation in the hope that the product at the end of that process is both good and predictable. The truly talented live in a much more chaotic world. They understand that the journey defines the product. In fact, they are both one and the same. In the creation of their masterpiece the talented watch their product come to life in incremental steps and they make adjustments along the way. Their end product may not be what they originally intended, but I would argue that the end product is better for it.